Originally Posted by
Flying Machine
Discount Economy L, T, K 100% 1
Yep, it's a K fare - should earn 100% PQM and 25% award miles. Outbound TYO-KUL shown as earning, so I am pretty sure it's a UA bug.
As far as sub-$300 goes, I think above has been answered. It does require buying on one of the OTAs (I bought on Justfly, with all the extra annoyances that entails, including not being able to cancel even within 24 hours).